Tears out of proportion. Eyes need tear film to keep the cornea clear of any local or environmental foreign materials. The tears are produced by local as well as accessory lacrimal glands and are constantly being replaced by evaporation or suction by the nasolacrimal system into the nose. Watery eyes can result from many causes, some of which being too much production or resistance to outflow.
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5

Get Eval.:
The answer depends upon how long you have had it, how much vision disturbance you have, whether it is strictly one-sided, your age, other health, and other criteria. However, some significant problems can be related. Get ophthalmological evaluation. Depending on what is seen the doctor can refine the possibilities. Consider Cluster HA, SUNCT syndrome, cavernous vein, glaucoma, other.
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8

Occipital neuralgia:
The most common symptom is suboccipital pain radiating to the back of the head and occasionally down the back of the neck. Tenderness over the greater and lesser occipital nerves is common. During severe episodes, the pain may be felt in the retro-orbital and temporal areas. Although the attacks may be bilateral, one side usually predominates. See an orofacial pain or pain management specialist.
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10

Spine specialist:
I'm not sure how the blurred vision fits into a problem with your spine. I would suggest an eval from an ophthalmologist for that.
The cause of "sciatic pain" could very likely also cause the "nerve pain" in the left foot. An EMG test could help to give your doctor some answers about this.
A spine specialist in your area could help to diagnose the cause of the neck pain and the sciatic pain.
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12

See your doctor:
Lymph nodes that are moveable are normal, but hard lumps in neck needs to be checked out by physical exam by your doctor, especially if it causes you to see white flashes, and have blurred vision.There may be something going on that you're unaware of, that the doctor needs to work up further with lab tests, or possibly referring you to an ophthalmologist to find out the cause of your blurred eyes.
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Go to ER now.:
Although this appears to be migraine, the duration of the headaches concerns me. If you have problem talking, you need to rush to an ER to get examined ASAP because minutes can matter. Have you had a recent head trauma?
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Could be Viral :
Conjunctivitis could be due to viral infection in which case antibiotics usually do not help and infact may cause even more uncomfortable eyes due to their potentials for allergy. Viral conjunctivitis may run its course and one can benifit from cold compresses and artificial tears. One should try to avoid rubbing the eyes. If symptoms persist, seeing an ophthalmologist is recommend.
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15

Thyroid eye disease:
Thyroid disorders can cause a number of eye signs & symptoms, broadly classified as TED (thyroid eye disease). Interestingly, this is an auto-immune disease. The same antibodies that attack your thyroid, attack the orbital tissues around your eye, including the orbital fat that cushions & protects your eyeball, and the extraocular muscles that attach to your eyeball and move your eyes in all ways.
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16

Get it checked ASAP:
At 57 years, you are not really in the age range for giant cell arteritis, but when scalp tenderness, headache, and blurred vision are used together, that condition should be ruled out (usually by lab testing initially). An eye exam can determine the cause for the eye pain, and if it might be related to the other symptoms.
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17

Thyroid and eyes:
If you had hyperthyroid graves disease, that could cause eye changes and GI problems. But you say your thyroid levels are, if anything, lowish, but actually normal. So your symptoms don't really fit with thyroid as an explanation. Talk to you doctor; maybe best to seek other causes.
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18

Eye pain and blurry:
vision along w/stiff neck and arm require a visit to your doc ASAP. Migraine is but one possibility but you need to get a proper diagnosis and then treatment. Peace and good health.
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19

It may be bad, but:
Bad is not the same as emergency - try to find a good headache specialist in your area. Yiur GP might refer or even a Univ Hospital directory or drug store may have referrals. ERs are full of trauma and possible contagion - if you need it, they are life saving. If not, go to a less stressful place. Here, Dr Dariush Saghafi is an expert and there are others - he's a gem.
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20

Muscle spasms:
Twitching or muscle spasms can be spontaneous or possibly related to fatigue or stress. Watery eyes and redness could be caused by allergy or irritation. Eyes and eyelids are sensitive and can react to chemicals/products on your hair, face, hands.
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Vision is a feature of a person's brain that allows him to see. He must have normal eyes, optic nerves (that stretch from the eyes to the back of his brain), and visual cortex (the vision center in the brain), in order to see properly. An ophthalmologist is a doctor specializing in vision.
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